Answer:
1. D
2. C
3. C
4. C
Step-by-step explanation:
1. Use slope formula, there are 2 versions: [tex]\frac{y1-y2}{x1-x2}[/tex] and [tex]\frac{y2-y1}{x2-x1}[/tex]
Plug in the values and solve
2.
y = -3 creates a horizontal line with a slope of 0, so it is wrong.
x = -2 has a vertical line with an unidentifed slope so it is correct.
3.
Divide everything by 2 and isolate y, then use the formula y = mx + b
(m is slope)
4. Use the slope formula again (look at question 1 for reference)
