1. find the slope for the following line: y = 3/4 x – 7 (1 point)
–7
7
3/4
-4/3
2. what is the y-intercept of the graph of the line given by the equation 3y + 4x = 15? (1 point)
5
4
3
–4/3
3. solve the system of equations by substitution.
x = –4y
x + 5y = 2 (1 point)
(–8, 2)
(8, –2)
(2/9, –8/9)
(–12, 3)
4. solve the system of equations by elimination.
3x + 4y = 31
2x – 4y = –6 (1 point)
(4, 5)
(5, 4)
(–5, 12.5)
(5, –4)