Solving by Graphing
y = x + 4
y = 2x + 5
x = 4y
2x + 3y = 22
r + s = -6
r - s = -10
The slopes of parallel lines.
What is equal (or the same)?
How do you find the x intercept of a linear equation?
What is substitute y = 0 and solve for x?
y = 3x - 2
y = -x - 2
y = x - 2
3x - y = 16
8a + 5b = 9
2a - 5b = -4
The slopes of perpendicular lines (give an example of perpendicular slopes).
What is negative (or opposite) reciprocals?
E.g. -2 and 1/2
Find the x intercept of x + y = 4
What is x = 4?
y = -3
x = 5
y = 3x - 1
7x + 2y = 37
2x + 3y = 6
3x + 5y = 15
Write an equation of a line parallel to y = 2x -2 and passing through point (7, 6).
What is y = 2x - 8 ?
Find the y intercept of 2x + 3y = 12.
What is y = 4?
y = (1/3)x - 3
2x - y = 8
3s - 2t = 4
t = 2s - 1
2a - 4b = 12
-8a + 16b = -48
Write an equation of a line parallel to equation
x - 2y = -8 and passing through (-6, -5).
What is y = 1/2 x - 2 ?
Find the x and y intercepts of 1/2 x - 1/3 y = 12.
What is x = 24 and y = -36?
y - 3x = 3
y = 3x - 2
t + u = 12
t = (1/3)u
(1/3)x + (1/4)y = 10
(1/3)x - (1/2)y = 4
Write an equation perpendicular to x - 3y = 3 and passing through (-9,11)
What is y = -3x -16 ?
Find the coordinates of the x and y intercepts of
9x + 2y = 18
What is (2, 0) and (0,9) ?