May 7

Week 12 – Determining X-intercepts using Substitution

This week in math we learnt how to determine x-intercepts using the substitution method.

the very first step is you have to isolate a variable, in the equations above a variable has already been isolated for us which is “y” and from that step is the second where you substitute the letter variable which is “y” in the second equation to the equation above.

after that step 3 is distributing and and putting the equation in a form you can factor and then factor it to the point of being able to determine the x-intercepts and after that you do the math and the x-intercepts should be -5/4 and 1 for these equations

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Posted May 7, 2018 by raduh2015 in category Grade 11, Math 11

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