Sec 2 Maths

BillaMax SG

hgf

How to solve the following question

Question 1 will do

JCMaths SG

For linear equation, y = mx + c, m is the gradient while c is the y-intercept.

Look in your textbook for the formula for gradient using 2 points (x1,y1) and (x2,y2). You can pick any 2 points on the graph given to use.

For the value of c, once you have m, you can find c using any pair of (x,y) values (or actually it's obvious from the graph even without calculation, but since the question says 'find' and not 'state', I personally prefer to show some working).

BillaMax SG

For linear equation, y = mx + c, m is the gradient while c is the y-intercept.

Look in your textbook for the formula for gradient using 2 points (x1,y1) and (x2,y2). You can pick any 2 points on the graph given to use.

so how do i do the question?

qdtimes2 SG

i will use the 2 end points of the line, (4, 5) and (12, -5).

1.gradient, m = (-5- 5)/(12- 4)

= -1.25

2.i will use one of the end point again.

y = mx + c

5 = -1.25(4) + c

c = 10

JCMaths SG

Hmm.. Personally, I would prefer to refrain from giving out answers directly because I don't think it helps in the learning, if it can be just copied and submitted, without any thought process or effort put in. Has TS looked up the formula for gradient?