Trigonometry Answers

Find and simplify a) f(a), b) f(a + h) and c) f(a+h)-f(a) / (h), h≠0 using the given function.

f(x)=x^2+5x-10

Decide whether y is a function of x.

18. 5x-y=10

19. x^2+y^2=4

Write an equation for the line in point/slope form and slope/intercept form that has the given condition.

4. Slope= 3/2 and passes through the origin

5. X-intercept=4 and Y-intercept=-3

Find the center and radius of the given circle and graph it.

15. x^2+y^2+10y+21=0

Write the standard form of the equation of the circle with the given center and radius.

14. center (-2, 0) and r = 3

Find the slope of the line that is a) parallel and b) perpendicular to the given line.

12. X=-8

13. Y=10

Give the slope and y-intercept of the given line and then graph it.

10. Y=3

11. X+2=0

Give the slope and y-intercept of the given line and then graph it.

8. 2x-3y=6

9. Y=-2x

Write an equation for the line in point/slope form and slope/intercept form that has the given condition.

6. Passes through (3,2) and is parallel to 2x-y=4


7. Passes through (-1,-1) and is perpendicular to y=5/2x+3

Write an equation for the line in point/slope form and slope/intercept form that has the given condition.

4. Slope= 3/2 and passes through the origin


5. X-intercept=4 and Y-intercept=-3