Find the slope of the line through the given points.(-1, -3), (-4, -2)
A. - 3
B. 
C. 
D. - 
Answer: D
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Add or subtract. Simplify your answer to lowest terms.
+ 
A. 
B. 
C. 
D. 
Find the solution for x of the equation
.
?
A. 
B. ?
C. ?
D. There is no solution.
Find the vertex, focus, and directrix of the parabola. Graph the equation.y2 = 8x
A. vertex: (0, 0)
focus: (0, 2)
directrix: y = -2
B. vertex: (0, 0)
focus: (2, 0)
directrix: x = -2
C. vertex: (0, 0)
focus: (0, 2)
directrix: y = -2
D. vertex: (0, 0)
focus: (-2, 0)
directrix: x = 2
Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 6.25 inches tall and stand 50 inches apart. At some point along the road from the lowest point of the cable, the cable is 0.56 inches above the roadway. Find the distance between that point and the base of the nearest tower.
A. 7.7 in. B. 7.3 in. C. 17.5 in. D. 17.7 in.