10. What in the value of A in the equation 3x + y = -9?
A. 1
B. 3
C.-9
D. 9
11. What is the standard form of the equation 6x - y - 7 = 0?
A. 6x - y = -7
B. 6x + y = 7
C. 6x - y = 7
D. 6x + y = -7
12. Is the equation x² + 3y = -6 a linear equation in two variables? Why?
A. Yes, because x + 3y = -6 is just the same as Ax + By = C.
B. No, because x² + 3y = -6 is just the same as Ax + By = C.
C. Yes, because the exponent of x is in degree 2.
D. No, because the exponent of x is in degree 2.
13. Which of the following is the standard form of linear equation?
A. Ax + By = C B. Ax+By + C = 0 C. y = mx + b
D. x + y = 0
14. The slope-intercept form of linear equation is
A. Y = x + b
B. y = mx + b
C. AX + By = C
D. AX + By +C =0
15. If y = -3x + 9 is in the slope-intercept form, what would be its standard form?
A. 3x - y = 9
B. 3x + y = 9
C.-3x + y = -9
D.-3x - y = -9
16. What is the slope-intercept form of the equation 2x + y = -5?
A. Y = 2x-5
B. y = 2x + 5
C. y = -2x-5
D. y = -2x + 5
C.-1
D. 1
17. What is the slope in the equation y=x-3?
A. -3
B.O
18. Find the slope of the equation 2x + y = 1.
A. -2
B. 2
C. -1
D. 1