exam Maths Puzzle Numerical Ability

How do I graph this using the intercept method...2x+3y=6

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exam Other Question

Find an approximate rational solution to 2x(2with exponent x) I tried to put in my TI89 as follows but it won�t give a decimal answer.
Solve(2^x=7,x)
Thanks! solve by substitution

x-y=-3
x-y=4