reduce 3x+7y-21=0 to intercept form.
Home
/
reduce 3x+7y-21=0 to intercept form.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
X INTERCEPT
Replace ''y'' with 0
So,
[tex]\sf{3x + 7(0) - 21 = 0}[/tex]
[tex]\sf{3x - 21 = 0}[/tex]
[tex]\sf{3x = 21}[/tex]
[tex]\sf{x = \dfrac{21}{3}}[/tex]
[tex]\sf\fbox{x = 7}[/tex]
Y INTERCEPT
Replace "x" with 0
So,
[tex]\sf{3(0) + 7y - 21 = 0}[/tex]
[tex]\sf{7y = 21}[/tex]
[tex]\sf{y = \dfrac{21}{7}}[/tex]
[tex]\sf\fbox{y = 3}[/tex]