If y-a x 2 -7x-15 makes an intercept of 1 1 - 2 units on X-axis- find the value of -a-

The correct option is C 2 Intercept on X axis ⇒ y = 0 amp; x = 112 ⇒ ax^2+7x 15 = 0 amp; x = 32 #160; ⇒a = 2 #160; ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VI

Mathematics

Formation of Algebraic Expressions

If y=a x 2 ...

Question

If $y = a x^{2} + 7 x - 15$ makes an intercept of $1 \frac{1}{2}$ units on X-axis, find the value of 'a'.

7

No worries! We‘ve got your back. Try BYJU‘S free classes today!

- 15

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

- 8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $2$
Intercept on X axis $\Rightarrow y = 0$ & $x = 1 \frac{1}{2}$
$\Rightarrow a x^{2} + 7 x - 15 = 0$ & $x = \frac{3}{2}$
$\Rightarrow a = 2$

Suggest Corrections

Similar questions

Q. If

y = a x^{2} + 7 x - 15

makes an intercept of

1 \frac{1}{2}

units on X-axis, then the value of

a

is?

Q. If

y = a x^{2} + 7 x - 15

makes an intercept of

1 \frac{1}{2}

units on X-axis, then the value of 'a' is

A circle touches positive $x -$ axis at a distance of $9$ units from the origin and makes an intercept of $24$ units on negative direction of $y -$ axis. Then

The graph of y + 2 = 0 is a line

(a) making an intercept of - 2 on the x - axis

(b) making an intercept of - 2 on the y - axis

(d) parallel to the y - axis at a distance of 2 units to the left of y - axis

Q. The equation of the line which makes an angle of

15^{\circ}

with positive

x

-axis and cuts-off an intercept of

3

unit on the negative

y

-axis is

Join BYJU'S Learning Program

If y=ax2+7x−15 makes an intercept of 112 units on X-axis, find the value of 'a'.

The correct option is C 2Intercept on X axis ⇒y=0 & x=112⇒ax2+7x−15=0 & x=32 ⇒a=2

If $y = a x^{2} + 7 x - 15$ makes an intercept of $1 \frac{1}{2}$ units on X-axis, find the value of 'a'.

The correct option is C $2$
Intercept on X axis $\Rightarrow y = 0$ & $x = 1 \frac{1}{2}$
$\Rightarrow a x^{2} + 7 x - 15 = 0$ & $x = \frac{3}{2}$
$\Rightarrow a = 2$