Question

If I wanna find where to equations intersect how do I do that?

Answer 1

solve each of them for the same variable. then set them equal to each other

Answer 2

you look it where the cross at when you plotted it which corrdinates are the same

Answer 3

its realted to streets

Answer 4

Could I also make a table?

Answer 5

yes

Answer 6

but it takes longer

Answer 7

do to tbles then see which corrdinates where the same from both eqautions

Answer 8

and sometimes if the the point is not a pretty number like 2 or 4 and its something like 2.334 then its hard to get an estimate

Answer 9

or do rise over run first you have to find the y intersept then rise 2 and run 1

Answer 10

Okay so my equations are y=4x-3 and y=9x-13

Answer 11

say you have \[y= m _{1} \times x _{1} + b _{1}\]
\[y= m _{2} \times x _{2} + b _{2}\]
you set the y together and solve for x
\[ (m _{2} \times x _{2}) + b _{2}= (m _{1} \times x _{1}) + b _{1}\]

Answer 12

and solve for x

Answer 13

You can do it various ways.
1. graph (but as you say if it isn't perfect then it doesn't work)
2. Substitution method
3. Addition method

Answer 14

in your case you will have \[4X-3= 9X -13\]
add 13 to both sides
\[4X-3+ 13= 9X -13+ 13\]
\[4X+10= 9X\]
subtract 4X to both sides
\[4X-4X+10= 9X-4X\]
\[10= 5X\]
you want to get x by itself so divide 5 to both sides
\[2= X\]

Answer 15

y = 4x - 3
y = 9x - 13

put in what y = in the second equation into the 1st equation
9x - 13 = 4x - 3 subtract 4x from both sides
5x - 13 = -3
5x = 10
x = 2

Answer 16

You are not done yet you want to find the point (x, y) and you have x so just plug in x to either function and you get the values for y