MyQuestionIcon

1

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

Solution of Linear Equation in 2 Variables

Find the valu...

Question

Find the value of 𝒑, if 𝒙 = 𝟑, 𝒚 = −𝟒 is a solution of the equation 𝟒𝒙 + 𝟐𝒑𝒚 = 𝟐𝟖.

Open in App

Solution

Given: 𝒙 = 𝟑, 𝒚 = −𝟒 is a solution of the equation
𝟒𝒙 + 𝟐𝒑𝒚 = 𝟐𝟖

Substitute 𝒙 = 𝟑, 𝒚 = −𝟒 in the equation, we get,

$4 (3) + 2 p (- 4) = 28$

$- 8 p = 16$

$p = - 2$

Suggest Corrections

thumbs-up

6

Similar questions

Q. Find all the zeroes of the polynomial

p (x) = x^{4} + x^{3} - 34 x^{2} - 4 x + 120

if two of its zeroes are

2

- 2 .

Q. Match the graphs with their respective linear equations.

𝒙 + 𝒚 = 𝟐 𝒙 + 𝒚 = 𝟎 𝟒𝒙 + 𝟕𝒚 = 𝟐𝟖

Q. If the polynomial

g (x) = x^{2} + 5 x + k

p (x) = 4 x^{4} + 20 x^{3} - 26 x^{2} - 10 x + 12

then find the value of 𝒌. Also find all the zeroes of the polynomial.

Q. If 𝒙 = 𝟐, 𝒚 = −𝟐 is a solution of the linear equation 3𝒙 − 𝟐𝒚 = 𝒌, then what is the value of 𝒌?

Q. The graph of 𝒚 = 𝒑(𝒙) is shown below. Looking at the graph, find the number of zeroes of 𝒑(𝒙).

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Framing a Linear Equation

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Solution of Linear Equation in 2 Variables

Standard IX Mathematics

Join BYJU'S Learning Program

CrossIcon