Question

5. A line has slope 3 and y-intercept –2. What is its equation?  

1 point

y=3x−2

y=−3x−2

y=−2x+3

y=3x+2

  6. A system has infinitely many solutions when…  

1 point

Lines intersect once

Lines never intersect

Lines are parallel

Lines are the same

  7. Solve the system:  

y=−2x+5
y=x−4

1 point

(3, 1)

(3, –1)

(–3, 1)

(–3, –1)

8. Evaluate f(−3) for:

f(x)={2x−1   ​x<0

         x^2​       x≥0​

1 point

-5

-7

-3

9

  9. Which is equivalent to (3x^2)^3?  

1 point

27x^5

27x^6

9x^6

3x^6

  10. Which equation represents exponential growth?  

1 point

𝑦= 5x-7

y= 100-2x

y= 4(1.25)^x

y= 2−3/x

Answer 1

5. y = 3x − 2

6. Lines are the same

7. (3, −1)

8. −7

9. 27x^6

10. y = 4(1.25)^x