SOLUTION: If the point (a, -1) is on the graph of x + 9y^2 = 25, what is the value of a?
Algebra.Com
Question 346280: If the point (a, -1) is on the graph of x + 9y^2 = 25, what is the value of a?
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Replace x with a and y with -1 and then solve equation for a.
x + 9y^2 = 25
a + 9(-1)^2 = 25
a + 9(1) = 25
a + 9 = 25
a = 25 - 9
a = 16
Did you follow?
RELATED QUESTIONS
If (-1,-4) is a point on the graph of y=f(x), what point do you know is on the graph of... (answered by math_tutor2020,ikleyn)
If the point (2,8) is on the graph of a one-to-one function f(x). Find the value of f(2)... (answered by ewatrrr)
A point on the circumference of the circle with the equation (x+10)^2+(y+1)^2=25 is... (answered by stanbon)
If (a,-12) is a point on the graph of y=x^2+7x, what is... (answered by jim_thompson5910)
if (a, -10) is a point on the graph of y=x^2-7x what is a? (answered by reviewermath)
A certain circle has an equation of x^2+y^2=25.
If the point (5, 0) is on the terminal... (answered by josgarithmetic)
If (-7,1) is a point on the graph of y= f(x), which of the following must be on the graph (answered by MathLover1)
If (x,y) = (4.8, B) gives the coordinates of a point on the graph of
y = 5/8 x + 5... (answered by nerdybill)
A point is moving on the graph of 4x^2 +9y^2 =180. When the point is at (3,4), its... (answered by Fombitz)