Unit 3 Review Linear Equations (Graded) Block 3

Front

What is the equation of a line of best fit for the relationship between foot length and height?

Back

f(x) = 5.57x + 25.05

Front

Write the equation of a horizontal line that passes through the point (-2, 1).

Back

y = 1

Front

Convert the equation of a line to slope-intercept form: y = -2x - 4.

Back

y = -2x - 4

Front

What does the slope represent in the equation C = 0.20x + 15?

Back

0.20 is the slope. It represents the cost per minute.

Front

If a line has a slope of 4/3, what is the slope of a parallel line?

Back

4/3

Front

What is the slope-intercept form of a line?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope from two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does a slope of 0 indicate about a line?

Back

A slope of 0 indicates a horizontal line.

Front

What does an undefined slope indicate about a line?

Back

An undefined slope indicates a vertical line.

Front

What is the y-intercept in the equation y = 3x + 2?

Back

The y-intercept is 2.