Unit 4 Review

Identify the slope and y-intercept.

y = -3x + 2

• m = 2, b = -3

• m = -3, b = 2

• m = y, b = x

• m = x, b = y

Write the equation of a line with a slope of 2 and a y-intercept of 9.

• y = 2x + 9

• y = 9x + 2

• 2 = 9m + b

• 9 = 2m + b

Write the equation of a line with a slope of 2/3 and a y-intercept of -8.

• y = -8x + 2/3

• y = 2/3x - 8

• -8 = 2/3m + b

• 2/3 = -8m + b

Write an equation of the line in slope intercept form.

• y = 3x + 2

• y = 2x + 1/3

• y = 1/3x + 2

• y = 2x + 3

Write an equation of the line in slope intercept form.

• y = -6x + 2

• y = x - 1/2

• y = 1/2x + 2

• y = -1/2x + 1

Find the slope of the line that passes through the given points. Write the slope in simplest form. 

(1,4), (3,−6)

• m = -5/3

• m = -1/3

• m = -1/5

• m = -5

Write an equation in point-slope form of the line that passes through the point (2,1) and has a slope of 2.

• y - 1 = 2(x - 2)

• y - 2 = 2(x - 1)

• y + 1 = 2(x + 2)

• y + 2 = 2( x + 1)

Write an equation in point-slope form of the line that passes through the point (-8, -2) and has a slope of 5.

• y - 2 = 5(x - 8)

• y + 2 = 5(x + 8)

• y + 8 = 5(x + 2)

• y + 5 = -8( x + 2)

Write an equation in slope intercept form of the line that passes through (3, 1) and (0, 10).

Write an equation in slope intercept form of the line that passes through (5, 4) and (6, 9).