Ch. 4 Warm-ups

Algebra I

Section 4-1 Warm-up

Graph the following equations using either a table or the cover-up method. You choose the best option1) y = -5x + 7 2) 15x + 12y = 60

Section 4-1 Part II Warm-Up

Identify the x and y intercepts, then graph the following equations using the slope-intercept form method.1) y = 2x – 5 2) y = -¾ x + 8

Section 4-2 Part I Warm-Up

Graph the following lines1) x = 3 2) y = -1

3) y = 0 4) x = -7

Section 4-2 Part II Warm-Up

Write an equation for the line with the given slope, and through the given point in slope-intercept form.1) m = 2, (-3, 5) 2) m = -5, (4, 8)

Section 4-3 Part I Warm-Up

Write the equation of the line that passes through the given points in slope-intercept form. 1) (3, 4), (6, 2) 2) (1, 4), (5, -12)

Section 4-3 Part II Warm-Up

1) Write an equation for the line with a slope of -3 and through the point (-1, 5) in point-slope form

2) Identify the slope and point on the line using the equation: y – 4 = -9(x + 3)

Section 4-4 Part I Warm-up

Re-write the following equation in standard form: y + 5 = -2(x – 3)

Re-write the following equation in slope-intercept form: 8x – 2y = 24

Section 4-4 Part II

1) Are the following lines parallel? 2x + 4y = 12y = 2x +5

2) Write the equation for the line parallel to y = 4x + 5 and through the point (-2, -10)

Section 4-5 Warm-Up

1) Are the following lines perpendicular?y = 3x + 52x + 6y = 12

2) Write the equation for the line perpendicular to y = 4x + 5 and through the point (8, 2)