Answer:
(3, 0)
Step-by-step explanation:
we have
we know that
The x-intercept is the value of x when the value of y is equal to zero
so
For y=0
substitute in the equation and solve for x
Divide by 7 both sides
therefore
The x-intercept is the point (3,0)
Answer:
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
here (h, k) = (- 3, - 1), thus
y = a(x + 3)² - 1
To find a substitute (4, 0) into the equation
0 = 49a - 1 ( add 1 to both sides )
49a = 1 ( divide both sides by 49 )
a =
y = (x + 3)² - 1
coefficient of the x² term is