Finding Slope and Y=mx

Identify the slope in the equation below.

y = 4x - 10

• y

• 4

• x

• -10

Identify the y-intercept in the equation below.

y = mx + b

• y

• m

• x

• b

Look at the graph.

Does it have a positive or negative slope?

• positive

• negative

Which ordered pair represents the y-intercept of the graph?

• (-2, 1)

• (0, 2)

• (2, 3)

Find the slope between (1,0) and (6,8)

• m = -8/5

• m = 8/5

• m = 7/6

What ordered pairs would you use to find the slope for the trend line?

• (1,0) (6,8)

• (8,6) (0,1)

After finding the slope between 2 points, what step is next?

• Choose a point.

• Find the slope.

• Write the equation in y=mx+b.

If you selected point (1,0) and m = 8/5, what substitution is correct to solve for b?

• 1 = 8/5 (0) + b

• 0 = 8/5 (1) + b

• 8/5 = 1 (0) + b

• y = mx + b

If m = 8/5 and b = -8/5, what is the equation of the trend line in y= mx + b?

• 0 = 8/5 (1) - 8/5

• y = -8/5 x + 8/5

• y = 8/5 x - 8/5

• y = mx + b

What ordered pairs would you use to find the slope for the trend line?

• (9,0) (3,8)

• (0,9) (8,3)