STAAR 8.4c Finding Slope from Tables and Graphs

What are the slope and intercept of the line

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TEKS.MATH.8.4C

Eve is starting a new job. She earns an hourly wage, and the cost of her uniform is taken out of her first paycheck. She makes a table showing the different number of hours she could work, x, and the amount her paycheck would be, y.

Hourly wage​ ​ (a)  

Uniform Cost​ (b)  

• 14.25
• 25.00
• 2.00
• 3.50
• 9.25
• 12.00

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TEKS.MATH.8.4C

An artist started with some paint bottles. The artist buys the same number of additional bottles each week. The table shows the relationship between the Number of Weeks, x, and the Number of Bottles, y, that the artist has.

How many bottles the the artist have at the start?

• 3

• 9

• 13

• 15

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TEKS.MATH.8.4C

The table shows a linear relationship between the variables x and y.

What is the slope of the linear relationship? ​ (a)  

What is the y-intercept?​ ​ (b)  

• 2.5
• 4
• 1
• 1.5
• 2
• 3
• 3.5

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TEKS.MATH.8.4C

Josh is saving money to by a computer. He put the initial amount he saved into a jar. Each month he puts an additional amount of money into the jar. The table shows the linear relationship between the number of months Josh added money into the jar, x, and the total amount of money into the jar, y. Which statement is true.

• The initial amount of money put into the jar was $225.

• The initial amount of money put into the jar was $75.

• The amount of money Josh adds to the jar each month is $45.

• The amount of money Josh adds to the jar each month is $60.

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TEKS.MATH.8.4C

The graph of a linear function is shown on the coordinate grid. What is the slope of the function? Enter numbers in the boxes provided.

Mathematical Equivalence

ON

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TEKS.MATH.8.4C

The graph of a linear function is shown on the coordinate grid. What is the y-intercept of the function? Enter numbers in the boxes provided.

Mathematical Equivalence

ON

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TEKS.MATH.8.4C

The line graphed on the coordinate grid can be used to determine the number of inches of water added to a swimming pool after different numbers of hours. Which statement best describes the slope of the graphed line?

• The water is being added at a rate of 0.42 inch per hour.

• The water is being added at a rate of 0.80 inch per hour.

• The water is being added at a rate of 2.40 inches per hour.

• The water is being added at a rate of 1.25 inches per hour.

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TEKS.MATH.8.4C

A linear function is represented on the coordinate grid. What is the y-intercept of the graph of this function?

• 5

• 6

• 7/8

• 8/7

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TEKS.MATH.8.4C

The graph of a linear function is shown on the coordinate grid. What is the slope of the graph of this function in decimal form? Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Mathematical Equivalence

ON

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TEKS.MATH.8.4C