Point A is the origin. Find the Coordinates of the two points that are 5 units and the x coordinate should be 3. (Hint: Make a sketch. The two points fall on the line x=3 and therefore have coordinates (3,y) where y is unknown. Use the distance formula suitably rearranged.)

A(0,0) B(3,y)

X1=0 X2=3 y1=0 y2=y

Should I use the distance formula?
d=√(x2-x1)^2+(y2-y1)^2

Question

Point A is the origin. Find the Coordinates of the two points that are 5 units and the x coordinate should be 3. (Hint: Make a sketch. The two points fall on the line x=3 and therefore have coordinates (3,y) where y is unknown. Use the distance formula suitably rearranged.)

A(0,0)  B(3,y)

X1=0 X2=3 y1=0 y2=y

Should I use the distance formula?
d=√(x2-x1)^2+(y2-y1)^2

amistre64 · Answer

you can, which is just the pythag thrm rearranged

anonymous · Answer

right but It doesn't make sense using distance on this, or does it

amistre64 · Answer

it does ...  distance is the length of the hypotenuse of a right triangle

amistre64 · Answer

a^2 + b^2 = c^2
sqrt(a^2 + b^2) = c

x^2 + y^2 = d^2
sqrt(x^2 + y^2) = d

anonymous · Answer

I have the D it's 5

amistre64 · Answer

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mathstudent55 · Answer

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