Functions: Slope and Y-Intercept

Slope from a table. Change in x, over change in y. Can you see it? Yes or no

What is the slope of the table?

• 9

• 7

• 4

• 2

What is the slope of this line? Rise/Run

• 0

• 2

• 4

• 6

On Friday,  Julio babysat for 4 hours and earned $28.    On Saturday, Julio babysat for 6 hours and earned $42.   On Sunday, Julio babysat for 7 hours and earned $49.

Write an equation which represents his earnings if x represents hours and y represents earnings.

• y = x + 24

• y = 7x

Which graphed line represents the relationship y = 5x

• Graph A

• Graph C

Which graph appears to contain the ordered pair (-1,-5) and has a y-intercept of  -3.

• Graph A

• Graph B

What is the y-intercept in the relationship illustrated in the table?

• -4

• -2

• -1

• 0

What is the y-intercept in the relationship illustrated in the graph?

• 2

• 0

• -2

• -3

Which of the following equations represents the same relationship shown in the graph.

• y = 2x

• y = x - 2

• y = x

• y = x + 2

Which graph has a point that passes through (-1 , 2) and has a slope of  3.

• Graph A

• Graph B

• Graph C