Year 12s: what will be the first way you research your future options? >>

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Enderfang2108

how do yo udo this question
https://vle.mathswatch.co.uk/images/questions/question17452.png

Reply 1

charlotted.fa

Original post by Enderfang2108

how do yo udo this question
https://vle.mathswatch.co.uk/images/questions/question17452.png

For a, if you add 4x to both sides you make the equation equal to y. If it is crossing the y axis, then you know that x is going to be 0 so you can then substitute that in as x.
For b, you have the point where the line crosses the y axis, which from part a you will know is the same as c if the x value is 0. So the equation is y = 2x -3. If you substitute in 10 as y into the equation you can find k :smile: