Question

y=mx+c find the value when m=-2 x=-7 c=-3

Answer 1

Given

• m = -2
• x = -7
• c = -3

To find

• y = mx + c (general form of a straight line)
• To find y

Solution

• y = mx + c
• y = (-2)(-7) + (-3)
• y = +14-3
• y = 11

∴ The value of y in y = mx + c where m is -2, x is -7,c is -3 is 11

Answer 2

$\begin{gathered}\begin{gathered}\bf Given -  \begin{cases} &\sf{y \: = mx \: + c} \\ &\sf{m \: = \: - 2}\\ &\sf{x \: = - 7}\\ &\sf{c \: = - 3} \end{cases}\end{gathered}\end{gathered}$

$\begin{gathered}\begin{gathered}\bf  To \:  Find :-  \begin{cases} &\sf{value \: of \: y}  \end{cases}\end{gathered}\end{gathered}$

$\large\underline\purple{\bold{Solution :- }}$

$\blue{\tt \:  according \: to \: statement}$

$\tt \:  \longrightarrow \: y \: = \: mx \: + \: c$

☆ On substituting m = - 2, x = - 7 and c = - 3, we get

$\tt \:  \longrightarrow \: y \: = \: ( - 2) \times ( - 7) + ( - 3)$

$\tt \:  \longrightarrow \: y \: = \: 14 - 3$

$\tt\implies \: \boxed{ \purple{\tt \:  y \: = \: 11}}$