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Find slope and y-intercept given
an equation in standard form.
3x - 6y = 12
5.5 day 2
Change from standard form to slope-intercept form.
3x + 5y = 15
-3x
-3x
How?: Solve for y!
3x - 6y = 12
-3x
-3x
5y = –3x + 15
5
5 5
-6y = -3x + 12
-6 -6 -6
y = –3x + 3
5
y = -3x - 2
-6
y = 1x - 2
2
Write an equation in slope-intercept form then find
the slope and y-intercept.
8x + 4y = 12
-8x
- 8x
Slope-intercept form:
y = mx + b
4y = -8x + 12
4
4
4
y = -2x + 3
Slope = -2
y-intercept = 3
Write an equation in slope-intercept form then find
the slope and y-intercept.
3x + 5y = 10
-3x
- 3x
Slope-intercept form:
y = mx + b
5y = -3x + 10
5
5
5
y = (-3/5)x + 2
Slope = -3
5
y-intercept = 2
Write an equation in slope-intercept form, then find the slope and y-intercept.
4x + 2y – 8 = 0
4x + 2y = 8
-4x
- 4x
Slope-intercept form:
y = mx + b
2y = -4x + 8
2
2
2
y = -2x + 4
Slope = -2
y-intercept = 4
Write an equation in slope-intercept form, then find
the slope and y-intercept.
3x + 2y = 6
-3x
-3x
Slope-intercept form:
y = mx + b
2y = 6 – 3x
2
2 2
y = 3 – 3x
2
Slope = -3
2
y-intercept = 3
I can find the slope and yintercept given an equation in
standard form.
Assignment: worksheet: 5.5 day 2