Evaluate:
-2 - 5
-7
What form of equations do we use for lines?
y = mx + b or slope intercept form.
When graphing linear equations, what do we plot first?
We begin at the y-intercept.
Solve:
3x - 2 = -14
x = -4
What is the slope of the line y=8?
Name three ways to describe slope.
Possible answers:
rate of change
rise over run
(y2 - y1) / (x2 - x1)
slope = m in y = mx + b
What is the slope of this equation?
x = 5
Undefined Slope
Evaluate the expression:
4 + 5 x 3 - 2
4 + 5 x 3 - 2
= 4 + 15 - 2
= 19 - 2
= 17
Graph the following equation. 8x + 4y = 16
Should be rewritten as y = -2x + 4 and then graphed.
Write an equation for a vertical line through the point (-3, 3)
x = -3
Is x = 2 a solution to the equation 2(x - 5) + 3 = 13 ?
No it is not a solution.
Evaluate this expression:
3 + [6 (11 + 1 - 4] / 8 x 2
3 + [6 (11 + 1 - 4] / 8 x 2
= 3 + [6(8)] / 8 x 2
= 3 + 48 / 8 x 2
= 3 + 6 x 2
= 3 + 12
= 15